2022 R18 Transcontinental . when on jiffy stand could not see oil . On blocks to put bike straight up and down barely above bottom red line. I put in about 1/2 quart went for a ride. On jiffy stand 3/4 up the red circle. Put jiffy stand back on blocks to have bike straight now oil above sight glass. If I loosen the drain plug to let a little out to I need to replace drain plug washer? Owners manual says I have to take it in to BMW for this ?